Carbureter.



S. P. SANDERS.

V GARBURETER.

APPLICATION FILED AUG. 12, 1913.

1, 105, 1 60. Patented July 28,1914.

HI Hu II I 1,

I III' AITOHNEY HE NORRIS PETERS CO.. PHOTO-LITHO.. WASHINGTON. D. C.

STEPHEN P. SANDERS, OF GUPERTINO, CALIFORNIA.

CARIBURETER.

Specification of Letters Patent.

Application filed August 12, 1913. Serial No. 784,348.

' To all whom it may concern:

Be it known that I, STEPHEN P. SANDERS, a citizen of the United States,residing at Cupertino, in the county of Santa Clara and State ofCalifornia, have invented new and useful Improvements in Carburetors, of

which the following is a specification.

This invention relates to a carburetor especially constructed forvaporizing volatile liquids for heating, lighting and cooking purposes.

The purpose of the presentinvention is to provide a simple,cheaply-manufactured, easily-adjusted carbureter which is compact inconstruction and automatic in operation.

The main object of the invention is to provide means for making avaporizing of absolute uniformity, and to provide means which willprevent any unvaporized fuel from escapin through the service-pipe ofthe apparatus.

Further objects will appear hereinafter.

The invention consists of the parts and the construction and combinationof parts as hereinafter more fully described and claimed, havingreference to the accompanying drawings, in which t Figure 1 1s a centralvertical section of the apparatus. Fig. 2 is a section of oneofmechanism.

Referring to the drawings: A indicates a tank adapted to contain water.Slidably mounted within the tank is a bell 2 of'the usual construction,and suitably secured in the top portion of same and extending downwardlyis a plunger shaft 3 having a snug sliding fit in a ram cylinder 4,which cylinder projects up from the bottomof the tank A, and is openbelow to a suitable source of fluid pressure supply. The fluid isadmitted and discharged to and from the ram cylinder 4 beneath theplunger 3 so as to reciprocate the hell 2. i The means for admitting anddischarging water from the ram cylinder 4: will hereinafter bedescribed.

Suitably arranged within the tank is a carbureting cylinder -5 and anoil well 6, both of which are secured to the bottom of the tank and openat their upper ends which project up into the bell 2 above the waterlevel. The carbureting cylinder 5 filled with a plurality ofcup-shapedper forated disks 7 which are covered with a suitable form ofthin cloth as indicated at The well 6 is so connected with a source ofhydrocarbon supply that a quantity of :same is always maintained withinthe well. A predetermined quantity of liquid is dipped up from the well6 at convenient intervals by means of a bucket 8 and disposed into thecarburet-ing cylinder 5- above the disks 7, to become absorbed andthoroughly distributed by the fabric covering of same.

'Air is drawn into the bell 2 through aninlet valve 9 which openstoadmit air as the bell is raised. The exhaust from the bell, as it falls,occurs through the carbureting cyl- :inder 5 so that the air becomesthoroughly saturated to form a rich illuminatlng or fuel mixture as itpasses through the fabric-cov .ered disks within the cylinder. Theperiodicenter with relation tothe suspending rod 10 so as to normallyassume a tilted position Patented July 28, 1914:.

with relation to the rod. The tilting move-' ment of the bucket ishowever limited by a set screw 8 secured-upona bracket extending fromthe rod. The bucket, when filled with liquid, will thus normally*assumethe inclined position shown in Fig. 3; and will, when elevated toa certain pointengagewith a. projection 12 which is positionedwith"relation 'to a duct 13 connecting the well with the carbureting cylinder5. and become tilted into the opposite direction where it automa-,

tically discharges its contents into the duct 13; here it is immediatelyconveyed to the carbureting cylinder and distributed over the severaldisks within same. The amount-of fuel elevated by the bucket'S can thusbe varied by adjusting the bucket to assumea 7 more or less inclinedposition. Thevapor produced by forcing air through the satu rated fabriccovering the perforated disks"? is conveyed through a pipe 14 to areceiver of suitable construction- The distillate or other hydrocarbonliquid from which the distillate supply tank as combined in a singlestructure.

13 represents a tank adapted to contain water, and slidably mounted insame is a bell 15 of suitable construction. Suppo-rted'within the tankon a standard 16 is a submerged oil tank 17, from the bottom of whicheX- tends a pipe 18 connected with a well 6 in the bottom of the tank A.The tank 17 is de-- signed to be filled through a pipe 19, whichconnects with the pipe 18 between the tanks A and B, having itsfillingend about on a level with the top of the oil tank 17. A re-vmovable cap 20 is provided on the end of the pipe 19 to preventevaporation. .An air vent. pipe 21 extends up through the tanks B and 17and terminates in a dome 22 in the top of the tank 17. The lower end ofthe pipe 21. is open to the atmosphere to permit egressi and ingress ofair to and from the oil tank. during the filling or discharging of thelatter.

A suitable form of check valve 23 is: mounted on the pipe 18 to preventthe liquid from being forced back out of the well 6 on the descent ofthe bell 2. The pipe 14,; through which exhaust from the carburetingtube takes place passes up through the bot-, tom of the tank B andterminates above they water level in the dome of the bell 15. A checkvalve 24; is provided on the pipe 14 to, prevent the product from thereservoir from passing back into the generating tube 5.

Tnterposed between the pipe 14 and theservice pipe 25, at any convenientpoint between the tanks A and B, is a series of second ary carburetingchambers generally indi cated at C. These secondary carbureting chambersare here shown as consisting of- T-shaped members 26 which are closedattheir lower ends by hollow caps 27. The several members C are connectedby suitableelbows 28 and projecting down into the bottom of the caps 27on the elbow connections 2S, are tubes 29 provided with screen caps 30on their lower ends. Any unvaporized fuel escaping from the carburetingtube 5 will naturally drain down through the pipe 14- and connectionslat into the several caps 27 For the purpose of equally distributingsuch trapped unvaporized fuel throughout the several chambers a seriesof connecting pipes 29 and 30 have been provided, through which thetrapped liquid may be conveyed from one chamber to another. Theunvaporized fuel is thus prevented from escaping through the servicepipe 25 and is furthermore given an opportunity to again vaporize, forthe simple reason that the vapor passing through the several chambers 0must necessarily pass through the trapped liquid as the pipe 29extendssufficiently far down into the hollow caps 27 to insure the passage ofvapor through the trapped liquid. The vapor in passing through thetrapped liquid will thus be further enriched and any accumulation oftrapped liquid will be removed. Any suitable number of secondarychambersC may be provided, said number depending on the size andcapacity of the pipe. By adjusting the inclined position of the bucket 8to increase or decrease the amount of liquid elevated to the carburetingtube 5 it will also be possible to reduce theamount of unvaporizedliquid trapped in the hollow caps 27. The capacities of the bell 2 andthe bucket 8 are furthermore so proportioned that each rise of the hell2 regulate the inlet and discharge of water to the ram 4. In the presentinstance I have shown a three-way valve 31 which is adapted to turn thewater from a supply pipe 32 into the ram. or to lead the water from tneram into a dlscharge plpe 33 and shut off the supply from the pipe 32accordingly as the bell is lifted'or lowered. The operation of the valveis preferably controlled by the rise and fall of the bell. The stem ofthe valve 31 is secured to a rocking member 3 1, provided with two stops35 and 36. The rocking member is so positioned as to have a limitedoscillating movement which is only suiiicient to open and close thevalve. Loosely mounted upon the valve stem is a secondary rocking member37, upon the up per end of which is fixed a horizontal hollow arm 38,adapted to contain a quantity of mercury or any other shiftable weightfor the purpose of causing the arm to rock quickly to turn the valve andimmediately cut off'or turn on the water from the supply pipe 32. Theposition of the secondary rocking arm 37 is controlled by a looselymounted crank arm 39, provided on one end with a weight 40 and on theopposite end with a pair of stops 11 and 4:2. Normally the rocking arm37 will stand at an incline to one'side or the other of a vertical line,and is supported in this position by either one or another of the stops4142 on the crank arm 39. The crank arm 39 is connected by a chain orcord 43 with the hell 2. The function of the crank arm 39 is to lift thearm 37 until the latter approaches or slightly passes the verticalposition. As soon as this occurs, however, the mercury or othershiftable weight within the cross-arm 38 causes the arm to instantlydescend on the opposite side until it is stopped by the opposite stop41. In falling from the position slightly over the vertical intoengagement with the stop 41, it will be seen that the arm 37 will strikethe stop 35 which is secured upon the stem of the valve. The valve stemwill thus be rocked sufficiently to cause the valve to assume thedesired position with relation to the upward or downward movement of theplunger within the ram cylinder.

The operation of the apparatus is as follows: The tank 17 being filledwith a suitable form of hydrocarbon liquid, the latter will flowtherefrom into the well 6', through the pipe 18. Assuming the valve 31to be turned tolet in water to the ram cylinder at, the bell 2 is liftedcausing the bucket 8 to dip up a predetermined quantity of fuel whichwill be discharged into the carbureting tube 5 the moment the bell 2 hasdrawn in. a full charge of air. At that moment the valve 31 is reversedby the falling of the arm 37, and if the receiver 15 is not alreadyfilled the bell 2 will begin to descend. This causes the air within thebell 2 to pass through the carbureting tube 5 where it becomes saturatedwith the volatile liquid disposed over the several disks within thetube. The air then passes through the pipe 1% into the receiver, andalso through the secondary carbureting chambers G, into the service pipe25, when the latter is opened to permit of an outward How.

The secondary carbureting chambers positioned as here shown not only actto enrich the mixture already generated but also prevent any escape ofunvaporized liquid through the service pipe, as all fuel escaping fromthe carbureting tube 5 is collected in the lower portions of thesecondary chambers G.

By adjusting the tilted position of the bucket 8 an unnecessary amountof liquid dipped up by same can be entirely obviated. The proportion ofoil and air may thus be changed at any time by varying the capac ity ofthe bucket.

The apparatus here shown is simple in construction and reliable inaction. The construction of the carbureting means within the tube 5,together with the provision of the secondary carbureting chambers 5,produces a highly volatile mixture of uniform quality, and the provisionof the trap chambers in the lower portion of the secondary carburetingchambers provide a positive means to prevent the escape of theyunvaporized fuel.

The materials and finish of the several parts of the apparatus are suchas experience and judgment of the manufacturer may dictate. l

Having thus described my invention, what I claim and desire to secure byLetters Patpipe and extending through one of the end- I most of saidmembers and into the hollow cap thereof, connecting pipes between theseveral hollow caps, elbows leading from the side of one member to theupper end of the next adjacent member, and a service pipe connected tothe other endmost of said mem-v hers.

2. A secondary carbureter including in combination with a maincarbureter and the discharge'pipe thereof, a series of spaced vertical.hollow members below said pipe, closures for the lower ends of saidhollow members, connecting pipes between said hollow members at thelower ends thereof, a pipe connected to the discharge pipe and extendinginto one of the endmost of said members, connections between the sidesof the hollow members and the tops of the next adjacent members, and aservice pipe leading from the other endmost member.

3. A secondary carbureter including in combination with 211113111carbureter and the discharge pipe thereof, a series of spaced verticalhollow members, below said pipe, a connection between the. dischargepipe and an endmost of said members to trap any of the hydrocarbon whichmay enter said discharge pipe, connections between the lower ends of allof said members, other connections between all of said members above thefirst named connections, and a service pipe connected to the other ofthe endmost of said members.

In testimony whereof I have hereunto set,

my hand in the presence of two subscribing Copies of this patent may beobtained for-five cents each, by addressing the Commissioner of Patents,Washington, D. C.

